Reinforced building corner



INVENTOR /7A AMI/N6 ATTORNEYS.

Nov. 26, 1940. s. F. MANNING REINFORCED k BUILDING CORNER Filed may 1, 1959 #5400 f Mi 8 ANA/AAA Patented Nov. 26, 1940 UNITED STATES 4 '2,2r3,sos PATENT OFFICE I azgasos nnmroncnn BUILDING comma Sheldon F. Manning, South Bend, Ind., asslgnor to Mastic Asphalt Corporation, South Bend, Ind., a corporation of Indiana Application May 1, 1939, Serial No. 271,043

to prevent separation of the component sections of composition board.

A further object is to provide a building corner I formedof composition board and reinforced by .means positioned. at its back and projected to adhesion of a surface coating to the board.

the front of the corner. k

A further object is to provide a. composition board building corner havinga metal reinforcing member constructed to compensate for expansion and contraction relative to the composition board.

A further object is to provide a building corner formed of composition board and having a rigid metal reinforcing member at its back and including projections extending through the composition board and overlying-the front of the corner in a manner which does not interfere with Other objects will be apparent from the description and appended claims.

In the drawing:

Fig. 1 is a front perspective view of the corner.

Fig. 21s a transverse sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a perspective view of one of the reinforcing members illustrating the position of the other member in relation thereto by' dotted lines.

Fig, 4 is a front elevation of the second reinforcing member.

Fig. 5 is a side elevation of the second reinforcing member.

Fig. 6 is a perspective view of a modified construction of the reinforcing member. r L;

Fig. I is a perspective view of another modified construction of reinforcing member.

Referring to the drawing and particularly to Figs. 1 to 5 which illustrate the preferred embodiment of the invention, the numeral l0 designates the two angularly disposed panels of composition board constituting the corner. Panels Ill may be independently formed with meeting 7 edges ll thereof shaped at an angle-of 45 to the panel faces; or said panels may be formed from a single sheet of composition board having ,a 90 N-shaped groove at therear thereof and extending' substantially through the board to permit the reduced thickness board portion at 'the apex of the groove to be bent. Suitable wawith asphalt or like waterproofing plastic to rigidify and strengthen the same.

The corner-is provided with-reinforcing means,

of which angle member I5, preferably formed of sheet metal, forms one part. Member is may be formed of transverse and longitudinal dimensions coinciding with the dimensions of the back of the comenor may be either shorter or narrower than the corner. Where short sections are employed, the same are located at the ends of the corner unit, and may also be located intermediate the ends as desired or required. A plurality of thin elongated projecting fingers ii are formed integrally with member I! and project therefrom in spaced relation and are preferably longitudinally aligned in spaced relation to bend ll of saidmember. Fingers ii are preferably struck out from member I5, leaving spaced slots iii in said member intermediate the side edges thereof. The leg or flange of member l5 opposite that from which fingers 16 extend is provided with a plurality of apertures is intermediate slots l8 and substantially vertically aligned with the ends of said slots.

A second reinforcing member comprises a metal plate 20 having, a. plurality of projecting fingers 2|v struck out therefrom and extending perpendicularly thereto. Fingers 2| are spaced apart andarranged to project through apertures I9 of member 15, and are of a small size to have free play in said aperture.

In assembling the corner, the member I5 is positioned in face contact with the back of the panels III, and fingers 16 thereof are passed through one of the boards at 25, either forcibly or through preformed passages in the board, in spaced relation to the meeting edges of the ,panel. Member 20 is then positioned against the leg of member i5 having the apertures it to receive its fingers 2|, and said fingers are also passed through the board adjacent thereto at 26. Fingers l6 and 2| are prefera ly of a length substantially greater than thethickness of board I so that the projecting ends thereof may be bent erably pressed into the outer faces of the boards to be flush therewith. This reinforces the corner at the outer surface thereof as illustrated in .Figs. 1 and 2; and at the same time does not interfere with adhesion of surfacing material such as asphalt to the board, as illustratedln dotted lines inFig. 2. The members I! and 20 not only hold panels ill in operative relation to prevent separation thereof, butalso serve to rigidity the-resultant corner. to prevent deformity thereof, and to greatly increase the long'i tudinal strength of the corner. The fingers l6 and ii are preferably of bent cross section to strengthen them and assist in penetration of the board. I L

f One of the salient features of this invention resides in the use of two separate metal members to carry the sets of fingers passing through the ill forming .the comer. The

opposite panels corner is intended to be used for an exterior building covering and hence will be exposed directly-to the weather. Metal reinforcements in installation of this character have heretofore been inoperative because metal has a substantially greater coefiicient of expansion than the composition board, and hence its constant ex.- posure to the weather causes seasonal expansion and contraction tending to cause separation of the panel units and destruction of the seal and water-proofing thereof. This condition is successfully met in the instant construction by virtue of the fact that the fingers penetrating the opposite panels'are carried by different metal parts, so that expansion of the metal parts i5 and 26 will not change the relative positions of panels,

between. The construction has thefurther advantage of permitting the fingers l6 and 20 to tie the corner panels l together at their front faces so that the construction is reinforced at front and back and held against separation under all conditions of expansion and contraction of the plate parts i5, 20. Also, the parts I5, 20 constitute an effective longitudinal stiffening unit for the corner.

In geographical areas Where temperature variations are not great so that expansion and contraction of metal is not a problem, it is possible to employ a simplified corner construction. Two

illustrative types of such a construction areshown in Figs. 6 and 7. In the Fig. 6 construction an angle reinforcement 30 of sheet metal or other suitable material may have a plurality of fingers 3i struck out therefrom, which fingers 3! are of a length less than the thickness of composition board, but long enough to obtain a solid connection with the board when pressed therein. Inthis construction the fingers are preferably of such transverse dimensions that they may be driven into the composition board. In the Fig. 7 construction the same general arrangement is employed as in Fig. 6, with the exception that fingers 32 thereof are of a length corresponding 4 generally to that of the fingers [6, 2| of the first mentioned embodiment, for passage completely through'the composition board and extension to and beyond the corner at its outer face. For this purpose the slots 33 formed in the angle member 30 incident to striking of the fingers 32 therefrom are necessarily so long that they extend into both flanges or legs of the angle member, neces sitating staggering of the fingers 32 which project from the opposite legs or flanges of member 3ll.- Both of these constructions serve to solidly interconnect and reinforce the corner panels l0 and to increase the longitudinal strength and rigidity of the corner and also the resistance of its construction to angular displacement of its 'said, projections.

aezaeoe fingers piercing one of said sections and the other flange having a plurality of openings formed therein, and a metal plate bearing against the last named flange of said angle member and havthereof relative to said composition board sections.

4. The construction defined in claim 1 wherein said fingers are struck out from said angle membet and plate respectively to provide slots therein spaced from the edges of said members.

5. A reinforced building corner comprising two angular-1y disposed sections of composition board in edge abutment; a pair of metal reinforcing members engaging said sections and each other, a set of fingers projecting from each member and into said sections, said members having a sliding interconnection to accommodate relative movement thereof incident to expansion.

6. A construction as defined in claim 5 wherein said fingers are of a length to project through said sections with their outer ends bent 'to bear against the outer faces of said sections and extending into engagement with the section opposite that through which they pass.

their free'ends pressed into the outer faces of said sections.

8. A construction as defined in claim 5 wherein said fingers project through said sections with their ends bearing against the outer faces of said sections and around the corner, the fingers of opposite members being arranged in staggered interdigital, relation.

9. A construction as defined in claim 5 wherein one of said members is bent to reinforce both sections. i

10. A reinforced building corner comprising two angularly disposed sections of composition board, a metal angle member engaging the rear sides of said sections, means carried by said member for piercing one section, a second metal member having a sliding interengagement with said first member, and means carried by said second metal member for piercing the other section.

11. A reinforced building corner comprising two angularly disposed sections of composition board, metal reinforcing means engaging the rear sides of said sections, and projections carried by said means and projecting into both sections to interconnect said sections in operative position.

12. The construction defined in claim 11 wherein said projections extend through said sections with their outer ends bent around the outer face of the corner, and a waterproof layer covering the outer faces of said section and the outer ends of SHELDON F. MANNING. 

